Assist Control (AC) ventilation, also known as Continuous Mandatory Ventilation (CMV), is a mode of mechanical ventilation where the ventilator delivers a preset number of breaths per minute at a guaranteed tidal volume or pressure. These breaths can either be initiated by the patient or by the machine itself if the patient fails to initiate a breath within a set time. It is a commonly used mode in critical care settings for patients who are unable to sustain adequate spontaneous breathing.
